Speedo question
!!!!!
Registered User
Joined: Jul 1999
Posts: 312
From: Tucson, Arizona USA
Re: Speedo question
To answer the original question, yes. The 145-mph speedo was released by GM for late model year 1986 Z28s (with and without the IROC-Z option) but only with the 305 TPI. So most 1986 Z28s did not get the 145-mph speedo, but the 85-mph unit.
Registered User
Joined: Feb 1999
Posts: 2,947
From: Springfield,OH. U.S.A.
Re: Speedo question
I've always understood that it was based on the suspension and wheel/tire combo that came on the vehicle "factory".
Z rated wheel/tire combo got the 145 speedo, no limiter.
Z rated wheel/tire combo got the 145 speedo, no limiter.
Thread Starter
Registered User
Joined: May 2004
Posts: 90
From: Natchitoches, The Free State of Northern Louisiana
Re: Speedo question
Originally Posted by Willie
To answer the original question, yes. The 145-mph speedo was released by GM for late model year 1986 Z28s (with and without the IROC-Z option) but only with the 305 TPI. So most 1986 Z28s did not get the 145-mph speedo, but the 85-mph unit.
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